Done

 

@pratyahara

Are these the right settings for declipper ?





Also, when I make changes to the strength parameter of Spectral hole filler, it doesn't do anything and the resulting spectrograms are always identical irrespective of the what I set it to.

 

Well, If you just want to use it as a transient shaper only, (which has nothing to do with unchirping). But even in that case you must set 'Mix' under 15%, or you will see the hardcoded EQ appearing. To get a flat frequency response you have to also set "Synth" to zero and 'Orig' to less than 25% (and "Warmth" to max., as mentioned). So it can be tweaked flat for some restricted usage. But in order to achieve even that you must use Plugin Doctor or the like.

 

Perfect declipper is obsolete and abandoned in 2017, and it's meant for declipping. I said Thimeo Stereo Tool, Absolute Highs module for restoring harmonics, for that purpose it is much better than Unchirp or Vitalize.
And 'Dequantize' module in Thimeo Stereo Tool is also more advanced, as well as its 'Declipper' module.
'Dequantize' directly 'unchirps', since it reduces quantization errors of lossy encoding. You can even use two passes for lower quality mp3s. But some of it will still remain.

Another example that shows that Unchirp is not a quality product:
It forces odd harmonics in order not to reconstruct the sound, but to make it crisp. And where it is the most necessary (in the high range) - it drops down.

 

Last edited by a moderator: Sep 3, 2023

By "transients at max" I meant the threshold.
When threshold is at max, orig or synth have no effect. You can check it with I/O diff.

 

@pratyahara

Alright, I got myself Stereo Tool 9.92 and I can sense the improvement over declipper. I never knew the development of Stereo Tool continued after declipper was abandoned. Thank you for bringing this to my attention.

Can you please share a preset for delossifier, if it's not much of a hassle? With default settings it's making funny spectrograms, the parameters needs tweaking and who else to ask for recommended settings on the matter other than yourself.



Thank you again for your help. Your contribution is highly appreciated.

 

Set 'Generate Highest Frequencies' to Never generate'. You should generate those frequencies with 'Absolute Highs' module only.

Here are some of the presets I use. I have many, so I made a choice of just a few.
https://pixeldrain.com/u/pKAkMuG5

 

Last edited by a moderator: Sep 5, 2023

Thanks bud. All done

God bless you.

 

Duplicate

 

I'm curious how these tools fare if you start from a lossless recording, compress to mp3, restore with the tools and compare, lossless vs restored.

 

Exactly what I did to test them.

 

Some artefacts you reduce, some you mask, some you eliminate. Some missing or suppressed data you extrapolate or amplify.
Nothing to the full extent of the original. The thing you can never retrieve is the lost detail.
The result is halfway between mp3 and the original WAV (a bit closer to mp3), but it is an improvement over mp3, that's for sure.
It takes time, tools and skill. So many people avoid it, because of mediocre results.

 

https://www.accentize.com/dxrevive/
"Elimination of Codec Artifacts (e.g., from Skype or Zoom recordings)"

About to test right now.

Update: Does very well against chirping from lossy codecs but changes the sound of the vocal track a decent bit. Handles transients very well but dampens the high frequencies a bit too much, could probably do with a high shelf after using this.

 

Last edited by a moderator: Sep 12, 2023

Thanks, trying now.

 

Okay so I tried it and I think it's only meant for the vocals not music. The harder the settings I try, the more music it rips off leaving only the vocals.

Thank you for the suggestion anyways, appreciated.